Improve documentation

Author: otherguy

Dockerfile

@@ -4,6 +4,18 @@ FROM php:7.4-fpm-alpine
 # Maintainer
 LABEL maintainer="Alexander Graf <alex@basecamp.tirol>"
 
+# Build arguments
+ARG VCS_REF=master
+ARG BUILD_DATE=""
+
+# http://label-schema.org/rc1/
+LABEL org.label-schema.schema-version "1.0"
+LABEL org.label-schema.name           "PHP7-FPM"
+LABEL org.label-schema.build-date     "${BUILD_DATE}"
+LABEL org.label-schema.description    "All-purpose PHP-FPM 7.4 Docker image that comes with the most popular extensions"
+LABEL org.label-schema.vcs-url        "https://github.com/otherguy/docker-php7-fpm"
+LABEL org.label-schema.vcs-ref        "${VCS_REF}"
+
 # Install dependencies
 RUN apk add --no-cache --virtual .build-deps $PHPIZE_DEPS \
  && apk add --no-cache curl shadow sqlite curl-dev freetype-dev libpng-dev libjpeg-turbo-dev \

README.md

@@ -22,9 +22,47 @@ or other PHP 7.4+ applications. Just use this lightweight and convenient image.
 
 ## 🌈 Quick Start
 
-* simple example docker file
-* zz-**.ini files for custom config
-* apk add --no-cache --virtual .build-deps $PHPIZE_DEPS && pecl install mongodb && docker-php-ext-enable mongodb
+### Create your Docker image
+
+Base your Docker image on `otherguy/php7-fpm:7.4`, add your project files and you're ready to go!
+
+```Dockerfile
+# Dockerfile
+FROM otherguy/php7-fpm:7.4
+
+COPY --chown=www-data:www-data . /srv
+```
+
+### Customize PHP settings
+
+If you want to change the PHP configuration or overwrite some defaults, simply create your own
+configuration file, have the filename start with a `z` and add it to the image.
+
+```ini
+# zz-custom.ini
+post_max_size       = 100M
+upload_max_filesize = 100M
+```
+
+```Dockerfile
+# Dockerfile
+...
+COPY zz-custom.ini /usr/local/etc/php/conf.d/
+...
+```
+
+### Add PHP extensions
+
+It's simple to add your own extensions to the image!
+
+```Dockerfile
+# Dockerfile
+...
+RUN apk add --no-cache --virtual .build-deps $PHPIZE_DEPS \
+ && pecl install mongodb \
+ && docker-php-ext-enable mongodb
+...
+```
 
 ## 📚 Description
 

conf/yy-custom.ini

@@ -4,9 +4,9 @@ short_open_tag = Off
 max_execution_time = 20
 max_input_nesting_level = 32
 memory_limit = 256M
-post_max_size = 50M
+post_max_size = 25M
 default_charset = "utf-8"
-upload_max_filesize = 50M
+upload_max_filesize = 25M
 max_file_uploads = 5
 default_socket_timeout = 5
 display_errors = On